Every Firebug release goes through regression testing and community testing by alpha and beta users. In addition we use Firebug code to develop Firebug.

Obvious and glaring "bugs" in Firebug are very often not things, that Firebug can fix. Rather they are problems caused by other extensions, by unusual settings, or by bugs in Firefox. This page attempts to help you determine, if your problem really is a Firebug bug, it is something else you can fix by your own or somebody else needs to fix it.

Please note: Firebug is not responsible for Firefox crashes. If Firefox crashes, it's a Firefox bug. However, unless you are running a nightly build of Firefox, creating a new Firefox profile and installing Firebug will probably fix it. If you want the crash fixed, please report it to Mozilla.

Install problems: Contact Firefox Support

Cannot open or mysterious problems: Create a new Firefox profile

Creating a new Firefox profile is a highly reliable way to solve problems. Note: uninstalling and reinstalling of Firebug or Firefox very rarely helps, because preferences won't get deleted. A new Firefox profile is a clean configuration with:

In the profile folder go to firebug/, move the file breakpoints.json (if it doesn't exist, go to step 4) out of that folder, reproduce the problem. Solved? Report the problem attaching your breakpoints.json (Attention:breakpoints.json contains the URLs of all breakpoints you set, so make sure there's nothing, that shouldn't be public), else

In the profile folder under firebug/ move the file annotations.json (if it doesn't exist, go to step 5) out of that folder, reproduce the problem. Solved? Report the problem attaching your annotations.json (Attention:annotations.json contains the URLs of all pages you enabled Firebug for, so make sure there's nothing, that shouldn't be public), else

Use about:addons or Firefox > Tools > Addons to disable all addons except Firebug. Solved? Enable the other extensions one by one until you find the buggy one and report it.